Self-inking stamp



June Il, 1929. K KLElN 1,716,642

SELF INKING STAMP Filed Novn 22, 1926 KAR. L KLEIN.

Inl/enfer Af orne] y fil Patented June 11, 1929.

uNirEosrATrs KARL KLEIN,0F ST..LOUIS, MISSOURI.

f SELF-INKING STAMP.

Application filed November 22, 1926. Serial` No. 149,830.

My invention relates to' improvements in stan'ipinpj mechanisms, andmore particularly to stamping mechanisms somewhat similar to theordinary rubber stamps, `and yhas for its principal objects theproduction of a tampinp,` mechanism which shall be selfinliing, simple,convenient, light and compact, extremely economical, reliable, andellicient and satisfactory for use wherevei found applicable.

The present type of self-hiking stamp is a relatively complicatedmechanism, haring,v numerous parts cooperating with each other, some ofthe parts being stationary, and others being,` movable relatively to oneanother, these stamps being' rather expensive due to their complexconstruction.

One oflthe objects of my invention is to make a stamp, that althoughself-hiking, yet will comprise only relatively fixed cooperatingelements, andvwill depend upon the material. of the parts themselves toaccomplish self-hiking', utilif/,ing` the physical properties of thevarious elements.

Many other objects and advantages of the constructionherein shown anddescribed will be obvious to those skilled in the art to which thisinvention appel-bains, from the disclosures herein given.

To this end, my invention consists in the novel construction,arrangement, and cornbination of parts herein shown and described, andmore particularly pointed out in the claims. f y A n In the drawings,wherein like reierence characters indicate like or corresponding partsthroughout the views,

Figure l is a longitudinal cross-section taken through the ,improvedstampg.

YFigure Il is a bottom face view of the' same; and

Figure III is a cross-section taken substantially on the line 3-3 ofFigure l.

In the drawings, wherein I have illustrated the preferred embodiment ofmy invention, which in the present instance is shown as a hand type ofstamping` device having a handle l whereby the stamp may be grasped foruse and by means of which the stamp may be hung up when out of use.

The frame or body of the stamp is indicated at 2, and generallyspeaking, the same comprises a bloc-k having a chamber or opening 8upwardly from its bottom, and te said block l idle l in any suitablemanner. This chamber is preferably formed with inclined side walls l and`the relatively heavy ink used for the purpose and retain it for longperiods of time.

The characters ot the design that it is desired to reproduce or imprintupon suitable surfaces, such as upon bills, letters, etc., are

indicated at 7%7, said imprinting,l elements being preferably made ofsome inaterialthat will absorb and permit the stamping ink to impregnatoits fibers, so that when the rear of the elements are in Contact with aVsource of ink supply as shown at 7, that portion being shown as the rearof the elements, said ink will be drawn through the same to the front orprinting face of the elements, and in this manner provide an automaticinking,` feed for the elements.

VIn. oider that only the desired portions of the printingV elements willreproduce their outlines upon the surface upon which the stamp ispressed, a backing sheet 8 is used andv is preferably made of relativelythick material. shown, this sheet preferably being substantiallyimpervious and mounted in proxiniity to the absorbent pad G and coveringone face of thesame.

rlhe pad and sheet are arranged within the ldove-tailed opening,` 3,compressing the same to wedge them in place firmly, and whenever it isdesired to remove or replace the pad or sheet for re-inking of the pador for renewal or any other purpose. the fastening screw 9, holding theend ofthe opening 3 closed, is lirst removed, after which the desiredmovement may be made. After replacing the parts, the plate 5 is againfastened in position and the parts will remain thus.

From the foregoing description itis seen that I have provided aself-inking stamp, in

which the material of the imprinting,- char` acters is such that theywill, of themselves,

conduct the printing ink from the source of supply, in this instance thepad, onto their faces, so that when the stamp is pressed onto thesurface desired the characters will be imprinted upon the latter.Pressure will cause tiene clamer 5? te contact more closely with the padand thus take up more ink and car-ry it to the face of the elements.

I have found that fibrous materia-'ls such as string, felt and similarproducts serve sat is'tactorily as imprinting elements.

Having thus described my invention, it is obvious that Variousimmaterial modilications may be made inthe same Without departing Yfromthe spirit et my invention: hence l do not Wish myself `to be understoodas limiting myself to the exact construction, form, arrangement7 andcombination of parts herein shown and described, or uses nientioned,except. as limited by the claims.

'Yhat I claim as new and desire to secure by Letters Patent iS:

l. A self-inking stamp comprising an inlisaturated pad, a non-metallic,substantially impervious backing sheetover one face thereet, and aperviene design on said sheet, the rear of said design communicatingWith said pad; whereby the inking fluid will be automatically fed onlytlnonghthe peri/'ioneI design when the stamp is pressed against asurface to be inked.

2. `A stamp, comprising an ink-absorl'ient pad, a plurality etinnn'inting characters adaptedV te conduct ink from said pad through therear of the characters to their tace, and a lixed backing member elresiliently eol'i'ipressible material for carrying` said characters. l

3. A seitinl ing stamp, comprising a source oi' ink supply, anen-metallic backing sheet covering one 'tace thereof, in'iprintablecharacters upon said sheet and projecting beyond the tace of the latterand communicating at their rear with Said source et ink snpply, wherebythe printing faces et said char acters will be automatically self-inkedWhenever the stamp is pressed against a surface to be imprinted. y

. KARL KLEIN.

